kubelet: extract multiple ignore errors validate logic to isExpectedError

[jonyhy96]

What type of PR is this?

/kind cleanup
/kind feature

What this PR does / why we need it:

Same error validate logic and comment has appeared multiple times

	if err != nil &&
		!nestedpendingoperations.IsAlreadyExists(err) &&
		!exponentialbackoff.IsExponentialBackoff(err) {
		// Ignore nestedpendingoperations.IsAlreadyExists and exponentialbackoff.IsExponentialBackoff errors, they are expected.
		// Log all other errors.

Better extract them into a public function call

Special notes for your reviewer:

None

[jonyhy96]

/release-note-none

[jonyhy96]

maybe /sig-storage

[jonyhy96]

/ok-to-test

[wgahnagl]

/triage accepted
/priority backlog

[jonyhy96]

/cc @jingxu97 PTAL

[endocrimes]

/lgtm

[jonyhy96]

/assign @jsafrane for approve

[k8s-ci-robot]

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In response to this:

/milestone v1.23

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[jingxu97]

/approve
/lgtm

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: endocrimes, jingxu97, jonyhy96, mrunalp

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